I definitely see the value in having such a notification as it will help our users exclusively be alerted that a moderator has made some changes to their content. But it may also be unnecessary in a lot of moderation scenarios. Moderators are already able to leave "moderator comments" on content that can be seen only by moderators and the original poster - generating a Notification for the user. When a moderator makes any major changes to the content, they are urged to leave such a comment so the content author knows what changes were made. This in addition to the fact that this information is already shown through Actions -> see revisions, some users may not want to be bothered by an additional notification. But thanks for the suggestion Simone. I will discuss this with IT.